Turbine.



No. 769,514. PATENTED SEPT. 6, 1904. L. E. TRUESDEL.

TURBINE.

APPLICATION FILED JAN. 5. 1904.

NO MODEL. 2 SHEETSBHEET 1.

WIT IVE S855:

\ INVENTOR liemueZfitfiuayaZeZ Q4 rm By ATTORNEYS N0 MODEL.

PATENTED SEPT. 6, 1904. L. B. TRUESDEL.

TURBINE.

APPLIOATION FILED JAN. 5. 1904.

2 SHEETS-SHEET 2.

ATTOR/VE Patented September 6, 1904.

LEMUEL E. TRUESDEL, OF KERSHAW SOUTH CAROLINA.

TURBINE.

SPECIFICATION forming part of Letters Patent No. 769,514, dated September 6, 1904. Application filed January 5, 1904. Serial No. 187,844. tNo model.)

To all Iv/1 0711, it ntay concern:

Be itknown that I, LEMUEL E. TRUEsDEL, a citizen of the United States, and a resident of Kershaw, in the county of Lancaster and State of South Carolina, have invented a new and Improved Turbine, of which the following is a full, clear, and exact description.

This invention relates to a radial-flow turbine; and it comprises certain novel features of construction and interarrangementof parts by which the efficiency and commercial utility of the apparatus is materially increased.

This specification is anexact description of one example of my invention, while the claims define the actual scope thereof.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the turbine. Fig. 2 is a vertical section thereof on the line 2 2 of Fig. 3. Fig. 3 is a horizontal section on the line 3 3 of Fig. 2. Fig. 4 is a front elevation of the vanes and the means for mounting them. Fig. 5 is a perspective view of the same. Fig. 6 is a detail view of one of the vanes. Fig. 7 is a section thereof on the line 7 7 of Fig. 6, and Fig. 8 is a detail view showing the exact form of the vanes and buckets.

The turbine has a circular casing 10, with a suitable base 11, the casing being formed in two sections joined at the center, as indicated best in Fig. 3. Suitably mounted in bearings 12, formed on or fastened to the casing 10, is the turbine-shaft 14, which is provided, if desired, with oiling devices and a pulley 16, from which the power of the turbine is taken. Said shaft is provided with a flange 17 within the casing 10, and to this flange is fastened the wheel 18 of the turbine. On the opposite side of the wheel 18 a collar 19 is located, and dowel-pins 20 are employed to connect the parts 17, 18, and 19, as shown.

21 indicates a lock-nut bearing against the collar 19.

The turbine-Wheel 18 has a web 22 attached thereto, this web extending from the wheel inward and outward to one side of the casing 10, where it is connected with a disk 23, bearing against the inner wall of said side of the casing. In this manner the wheel is mounted to rotate with the shaft within the casing, as shown. The said wheel 18 carries at its outer periphery a number of buckets 24, which are disposed radially of the wheel in the usual manner and are carried by two shrouds 25, engaged, respectively, with the ends of the buckets, and one of said shrouds being suitably fastened to the side of the wheel 18, as shown. Inward from the buckets 21 is an annular row of buckets 26, which are formed integral with or otherwise mounted on the wheel and provided with a shroud 27, extending around their outer ends. Bearing between the annular rows of buckets 2 1 and 26 is a group of vanes 28, which, as best shown in Figs. 6 and 7, have projections 28 formed on their ends, and said projections are fitted in corresponding orifices formed in short shrouds 29. The shrouds 29 are secured in their engagement with the vanes 28 and are mounted with the vanes on the inner wall of the casing 10 by means of bolts 30, which pass through the end portions of the shrouds and through spacer-blocks 31, substantially triangular in form, located between the shrouds, and spacers 32, located between the inner shroud and the adjacent wall of the casing 10. Fig. 8 shows the exact form which I prefer to have the parts 24:, 26, and 28 assume.

33 indicates a steam-inlet nozzle which enters tangentially to the wheel and discharges the steam into the buckets 21, the steam driving the wheel by its engagement with these buckets and being then deflected into the vanes 28, where it is again deflected into the buckets 26, again to impart a driving influence to the wheel.

34: indicates the exhaust-outlet, which passes tangentially from the wheel at the lower part thereof.

Fig. 1 illustrates the steam-supply pipe 35, which leads to the nozzle 33 and is fitted with a suitable valve 36, operated by a governor 37. Said governor is of the centrifugal type and is driven through bevel-gears 38, one of which is connected with a shaft 39, mounted in bearings on the casing 10 and itself driven by a worm-wheel 4:1 and a worm 4:2, fastened, respectively, to the shaft and to the main shaft of the turbine. In this manner the speed of the turbine may be automatically regulated.

In the operation of the apparatus the steam entering through the nozzle 83 imparts a driving influence to the wheel both in striking the buckets 24: and 26 and by the arrangement of these buckets, as shown in connection with the vanes 28, and an efficient utilization of the energy is eflected. The web 22 being essentially in frusto-conical form deflects the exhaust-steam outward after it leaves the buckets 26 and causes the steam to lie at one side of the wheel, so as not to interfere with the operation of the turbine, this steam passing in a constant stream from the exhaust-opening 3 L.

Various changes in the form, proportions, and minor details of my invention may be resorted to at will Without departing from the spirit and scope thereof. Hence I consider myself entitled to all such variations as may lie within the intent of my claims.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent- 1. A turbine having a group of vanes, shrouds supporting the vanes, blocks at the ends of the shrouds, and means for engaging the blocks to hold the shrouds in position within the turbine.

, 2. A turbine, having a group of vanes, shrouds engaged with the ends thereof, means for mounting the shrouds stationary within the turbine, whereby to hold the vanes, said means comprising spacers lying between the shrouds, connections extending through the spacers from one shroud to the other and engaged with the turbine-casing, and additional spacers lying between the turbine-casing and the inner shroud.

3. A turb1ne,compr1s1ng a casing, a rotary member mounted therein,

concentric rows of buckets attached to the rotating, member, a group of vanes mounted stationary between the buckets, and a spacer lying at one end of the group of vanes and having an inclined surface extending between the rows of buckets.

&. Aturbine comprising a casing provided with vanes, arotary member mounted therein carrying buckets between which and the easing an open space is left, and means for deflecting the exhaust sidewise from said rotary member into the space.

5. A turbine, comprising a casing, a rotary member mounted therein, groups of vanes and buckets respectively carried by the casing and by said rotary member,

and a web attached to the rotary member and serving to deflect the exhaust-steam sidewise from the said member.

6. A turbine, comprising a casing, a wheel mounted therein, coacting buckets and vanes carried respectively on the wheel and casing, and a web located inward of the buckets and attached to the Wheel, said web extending laterally from the wheel and toward the axis thereof, whereby to deflect the exhaust-steam from the bucket.

7. A turbine, comprising a casing, a revoluble member mounted therein, a group of buckets attached to said revoluble member, a group of vanes coacting with the buckets and supported on the casing, a steam-inlet nozzle extending tangentially to the group of buckets on the rotating member, and a steam-outlet nozzle extending tangentially from said buckets, both of said nozzles being fitted to the walls of the casing.

In testimony whereof Ihave signed my name to this specification in the presence of two subscribing witnesses.

LEMUEL E. TRUESDEL.

Witnesses:

J. FRANK MACKEY, J r., W. C. TURLEY. 

